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High-pressure reciprocating sealing gasket for pump valve and preparation method thereof

A sealing gasket and high-pressure technology, which is applied in the field of high-pressure reciprocating gaskets for pumps and valves and its preparation, can solve the problems of gasket compressive strength, impact resistance, service life, equipment use requirements, etc., and achieve good oil resistance, sealing Reliable, low compression set effect

Active Publication Date: 2013-12-11
ANHUI TIANMA PUMP VALVE GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In recent years, the fluid used in pumps and valves has developed rapidly towards high pressure and high speed, which has led to the phenomenon that the existing gaskets are not suitable for the requirements of the equipment in terms of compressive strength, impact resistance, and service life to varying degrees. It is far from meeting the actual needs

Method used

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  • High-pressure reciprocating sealing gasket for pump valve and preparation method thereof

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Embodiment Construction

[0012] A high-pressure reciprocating gasket for pump valves, made of the following raw materials (kg): nitrile rubber (P228) 80, EPDM rubber (Germany Lanxess 5962) 25, 3# smoked sheet rubber 20, SG -3 type PVC resin 12, sulfur 1.5, 1,4-bis-tert-butylperoxycumene 0.8, zinc oxide 1.5, stearic acid 2, modified nano-diamond 18, iron tailings powder 8, antioxidant MBZ 1.5, anti-aging agent RD 2, rhine wax 3, vaseline 4, fast extrusion carbon black N660 15, diethylene glycol dibenzoate 10, aluminum hydroxide 8, accelerator TMTD 1.5, accelerator NA-22 2.

[0013] The preparation method of described modified nano-diamond is as follows:

[0014] a. Weigh a certain amount of nano-diamond, add 4% nano-tantalum carbide, 3% nano-zirconia, 2% nano-magnesium nitride, 6% nano-attapulgite, 3% nano-barite and mix evenly , calcined at 430°C for 3h, cooled to room temperature, then added 1% tetraisopropylbis(dioctylphosphite acyloxy) titanate, 3% isooctyl palmitate, 5% polyisobutylene , 2% sod...

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Abstract

The invention discloses a high-pressure reciprocating sealing gasket for a pump valve and a preparation method thereof. The sealing gasket is prepared from the following raw materials in parts by weight: 70-90 of nitrile butadiene rubber, 20-30 of ethylene-propylene-diene monomer, 15-25 of 3# smoke sheet rubber, 10-15 of SG-3 type PVC resin, 1-2 of sulfur, 0.5-1 of 1,4-bis(1-(tert-butylperoxy)-1-methylethyl)-benzene, 1-2 of zinc oxide, 1-2 of stearic acid, 15-20 of modified nano-diamond, 5-10 of an iron tailings powder, 1-2 of an anti-aging agent MBZ, 2-3 of an anti-aging agent RD, 2-3 of Rhine wax, 3-4 of vaseline, 12-18 of fast extruding furnace black N660, 8-12 of di(ethylene glycol) dibenzoate, 5-10 of aluminum hydroxide, 1-2 of an accelerant TMTD, and 1-2 of an accelerant NA-22. The sealing gasket has high impact resistance, high compressive strength, tear resistance and small compression permanent deformation, has the using pressure which is increased by 3-4 times as compared with that of a traditional sealing gasket, can work under a high-pressure high-speed condition for a long time, is reliable in sealing, and enables the service life of the sealing gasket to be improved.

Description

technical field [0001] The invention relates to a gasket and a preparation method thereof, in particular to a high-pressure reciprocating gasket for a pump valve and a preparation method thereof. Background technique [0002] In recent years, the fluid used in pumps and valves has developed rapidly towards high pressure and high speed, which has led to the phenomenon that the existing gaskets are not suitable for the requirements of the equipment in terms of compressive strength, impact resistance, and service life to varying degrees. It is far from being able to meet the actual needs. Contents of the invention [0003] The object of the invention is a high-pressure reciprocating gasket for pump valves with high strength, high impact resistance and good resilience and a preparation method thereof. [0004] The technology that the present invention adopts is as follows: [0005] A high-pressure reciprocating gasket for pump valves, made of the following raw materials in p...

Claims

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Application Information

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IPC IPC(8): C08L9/02C08L23/16C08L7/00C08L27/06C08K13/06C08K9/04C08K9/02C08K3/04C08K3/06C08K5/14C08K3/22C08K5/09C08K5/103B29C35/02
Inventor 王成华周峰王成荣
Owner ANHUI TIANMA PUMP VALVE GROUP
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